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3 years ago

What is blank _+ 5 = 5 + 9 ? And 16 • 4 = • 16?

Mathematics

1 answer:

Agata [3.3K]3 years ago

4 0

Answer:

The first one would be 9

The second one would be 4

Step-by-step explanation:

By adding the same numbers, you make the equations equal and therefore true.

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PLEASE HELP ME:<br><br> Find the perimeter of the figure. Round to the nearest tenth.

Ksenya-84 [330]

Answer:

perimeter = 20.9 units

Step-by-step explanation:

perimeter

perimeter = distance around two dimensional shape

= addition of all sides lengths

<h2>perimeter of the figure</h2><h2>= AB+BC+CD+AD</h2>

distance formula:

$d = \sqrt{( x_{2} - x_{1}) {}^{2} + ( y_{2} - y_{1}) {}^{2} }$

<h3>1) distance of AB</h3>

A(-3,0) B(2,4)

x1 = -3 x2 = 2

y1 = 0 y2 = 4

(substitute the values into the distance formula)

$ab = \sqrt{(2 - ( - 3)) {}^{2} + (4 - 0) {}^{2} }$

$ab = \sqrt{5 {}^{2} + 4 {}^{2} }$

$ab = \sqrt{41}$ AB = 6.4 units

<h3>2) distance of BC</h3>

B(2,4) C(3,1)

x1 = 2 x2 = 3

y1 = 4 y2 = 1

$bc = \sqrt{(3 - 2) {}^{2} + (1 - 4) {}^{2} }$

$bc = \sqrt{1 {}^{2} + ( - 3) {}^{2} }$

$bc = \sqrt{10}$

BC = 3.2 units

<h3>3) distance of CD</h3>

C(3,1) D(-4,-3)

x1 = 3 x2 = -4

y1 = 1 y2 = -3

$cd = \sqrt{( - 4 - 3) {}^{2} + ( - 3 - 1)) {}^{2} }$

$cd = \sqrt{( - 7) {}^{2} + ( - 4 ){}^{2} }$

$cd = \sqrt{65}$

CD = 8.1 units

<h3>4) distance of AD</h3>

A(-3,0) D(-4,-3)

x1 = -3 x2 = -4

y1 = 0 y2 = -3

$ad = \sqrt{( - 4 - ( - 3)) {}^{2} + ( - 3 - 0) {}^{2} }$

$ad = \sqrt{( - 1) {}^{2} + ( - 3) {}^{2} }$

$ad = \sqrt{10}$

AD = 3.2 units

<h2>perimeter of figure</h2>

= AB+BC+CD+AD

= 6.4 + 3.2 + 8.1 + 3.2

= 20.9 units

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3 years ago

Graph the line with slope 3 passing through the point (5,-4).

12345 [234]

Answer:

y = 3x-16

Step-by-step explanation:

two points where the line goes through is (5,-4) as mentioned and (0,-16)

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3 years ago

At the local recycling center, employees are paid every two weeks. If Jeremy was paid 12,480 last year, how much did he make eac

Alborosie

00891r 6
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00020 Answer:892r6
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3 years ago

HELP!!! I NEED HELP!!!!!!

Oliga [24]

Answer:

0.0365 pounds per dollar

$2.79 per pound

$2.79 per pound is typically used

Step-by-step explanation:

13.95/5 = $2.79 per pound

5/13.95 = 0.0365 pounds per dollar

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3 years ago

The price of a sofa was reduced from $250 to $180. By what percentage was the price

Inessa [10]

Answer:

the price was reduced by 28%

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3 years ago

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